Enemies that attack Jaina are Chilled. Additionally, every 10 seconds, Jaina gains 50 Physical Armor against the next enemy Hero Basic Attack, reducing the damage taken by 50%.

7

Ice Lance

Hitting a Chilled target with Frostbolt reduces its cooldown by 1.5 seconds and restores 10 Mana.

7

Ice Floes

Increase the width of Cone of Cold by 100% and cause each chilled Hero hit to reduce its cooldown by 3 seconds, up to a maximum of 6 seconds per use.

7

Icefury Wand

Basic Attacks against Chilled Heroes deal 100% more damage and lower the cooldown of Blizzard by 2 seconds.

10

Ring of Frost

After a 1.5 second delay, create a Ring of Frost in an area that deals 310 (+4% per level) damage and Roots enemies for 3 seconds. The ring persists for 3 seconds afterward, Chilling any enemies who touch it.

80

10

Summon Water Elemental

Summon a Water Elemental at target location. The Water Elemental's Basic Attacks deal 62 (+4% per level) damage, splash for 25% damage and Chill. The Ability can be reactivated to retarget the Water Elemental. Lasts 20 seconds.

Activate to make Jaina's Basic Abilities' cooldowns recharge 200% faster and reduce their Mana cost by 50% for 5 seconds.

60

16

Snowstorm

The damage of the second wave of Blizzard is increased by 20%. The damage of the third wave is increased by 60%.

16

Northern Exposure

Enemies damaged by Cone of Cold have their Armor lowered by 20 for 2 seconds, increasing their damage taken by 20%.

16

Numbing Blast

Cone of Cold Roots Chilled targets for 1 second.

20

Cold Snap

The center area of Ring of Frost deals 310 (+4% per level) damage and Roots enemies after the outer ring expires. Each enemy Hero hit reduces its cooldown by 10 seconds.

20

Wintermute

Increases the cast range of Water Elemental by 50%, and the Water Elemental will now mimic Jaina's Basic Abilities for 50% damage.

20

Ice Blink

Activate to teleport a short distance and Chill all nearby enemies.

60

20

Deep Chill

Frostbite's Chill can now stack a second time, slowing targets up to 40%.

Shortcut

Ability Name

Description

Cooldown

Mana Cost

Q

Frostbolt

Deal 184 (+4% per level) damage and Chill the target.

4

30

W

Blizzard

Bombard an area with 3 waves of ice, dealing 142 (+4% per level) damage each. Damaged enemies are Chilled.

15

90

E

Cone of Cold

Deal 220 (+4% per level) damage and Chill targets.

10

40

R

Summon Water Elemental

Summon a Water Elemental at target location. The Water Elemental's Basic Attacks deal 62 (+4% per level) damage, splash for 25% damage and Chill. The Ability can be reactivated to retarget the Water Elemental. Lasts 20 seconds.

60

60

R

Ring of Frost

After a 1.5 second delay, create a Ring of Frost in an area that deals 310 (+4% per level) damage and Roots enemies for 3 seconds. The ring persists for 3 seconds afterward, Chilling any enemies who touch it.

Activate to place Jaina in Stasis and gain Invulnerability for 2.5 seconds. When this effect expires, nearby enemies are Chilled.

40

Jaina

2019-08-06 Patch Notes v 2.47.0

Bug Fixes

Taking the Snowstorm talent on Jaina in the middle of a Blizzard cast no longer changes the damage value for the rest of the game.

2019-06-18 Patch Notes v 2.46.0

Bug Fixes

Jaina: Jaina's Water Elemental mimic damage from Wintermute now correctly reflects the tooltip and Balance Update. 50% of Jaina's Basic Frostbolt and Cone of Cold damage is mimicked by the Water Elemental.

2019-05-22 Balance Update v 2.45.1

Hero Updates

Talents

Level 7

Ice Lance [Q]

Cooldown reduction reduced from 2 to 1.5 seconds

Icefury Wand [Passive]

Cooldown reduction increased from 1.5 to 2 seconds

Level 13

Storm Front [W]

Cast range increase reduced from 100% to 75%

Additional functionality: Now also increases the radius of Blizzard by 30%

Level 16

Snowstorm [W]

New functionality: The second wave of Blizzard deals 20% bonus damage. The third wave of Blizzard deals 60% bonus damage.​

Developer Comment: Ice Lance has been outperforming the other talents on
its tier for a long time. While we enjoy the playstyle that it enables, it is
slightly too powerful compared to the other options. We are reducing its
cooldown reduction while also giving Jaina other build paths to consider.

2019-01-23 Balance Update v 2.42.1

Hero Updates

Abilities

Frostbolt (Q)

Damage reduced from 190 to 184

Cone of Cold (E)

Damage reduced from 230 to 220

Talents

Level 7

Ice Floes (E)

Cooldown reduction increased from 2 to 3 seconds

Icefury Wand (Passive)

Damage bonus increased from 75 to 100%

Cooldown reduction increased from 1 to 1.5 seconds

Level 16

Northern Exposure (E)

Armor reduction decreased from 25 to 20

2018-10-16 Patch Notes v 2.39.0

Bug Fixes

Spell Power: Fixed an issue where Spell Power would no longer affect a Hero's abilities after they died. (For example: Jaina's Blizzard will now continue to deal bonus damage if she received increased Spell Power but died before the second and third waves.)

2018-08-07 Patch Notes v 2.36.0

Hero Updates

Abilities

Summon Water Elemental (R)

Damage reduced from 78 to 62

Damage now benefits from Frostbite

Damage now counts towards Frostbite's quest

Bug Fixes

Jaina: Fixed an issue that allowed the Water Elemental's attacks to progress the Frostbite quest progress against unchilled targets.

2018-05-09 Balance Update v 2.32.2

Bug Fixes

Ice Block: Fixed an issue in which certain Abilities remained castable during Ice Block.

2018-05-01 Hotfix Patch v 2.32.1

Bug Fixes

Ice Block: Fixed an issue in which certain Abilities remained castable during Ice Block.

2018-03-21 Balance Update v 2.30.6

Bug Fixes

Heroes can no longer cast Area-of-Effect abilities globally before the gates open.

Bug Fixes

2017-10-17 Patch Notes v 2.28.3

Bug Fixes

Jaina: Fixed an issue that prevented Summon Water Elemental from being cast on the opposite side of unpathable terrain in areas that are within range and visible to the player.

2017-09-26 Patch Notes v 2.28.0

Bug Fixes

Jaina: Fixed a typo in the Icy Veins tooltip which incorrectly stated that the Talent provided a 300% cooldown recharge rate , rather than 200%. This only affected the tooltip, and the Talent's functionality has not changed.

Jaina: Fixed an issue that prevented Jaina from casting Water Elemental if unpathable terrain existed between Jaina and the desired casting location.

Activate to teleport a short distance and Chill nearby enemies. 60 second cooldown.

Cold Snap (R)

Now also reduces the cooldown of Ring of Frost by 10 seconds per enemy Hero hit.

Deep Chill (Trait)

Moved from Level 1

New Functionality:

Frostbite’s slow amount now stacks a second time, slowing enemy Heroes by up to 40%.

Developer Comment: Our main goal for Jaina's changes was to spruce up
her talent tree while disrupting as few of her existing builds as possible.
Her new baseline quest to unlock Improved Ice Block should allow for more play
making potential, which we are adding as a response to players who were
disappointed when we moved the talent to Level 20. We also heard feedback from
many players that the removal of Bolt of the Storm off of heroes like Jaina
has hurt their play making ability and overall fun, so we're going back a bit
on our decision to take it away on her. While we want to be more careful where
we add these Blink-type abilities, we believe there is a place for it on
Jaina, and have added an offensive use case which should hopefully allow her
to make more aggressive plays in the late game.

LEVEL (TIER)

Jaina Talents

1 (1)

Winter's Reach (Q)

Lingering Chill (Trait)

(!) Fingers of Frost (Passive)

4 (2)

Frost Shards (Q)

Arcane Intellect (Trait)

Frost Armor (Passive)

7 (3)

Ice Floes (E)

Ice Lance (Q)

Icefury Wand (Passive)

10 (4)

Summon Water Elemental

Ring of Frost

—

—

13 (5)

Storm Front (W)

Ice Barrier (Trait)

Ice Veins (Active)

16 (6)

Snowstorm (W)

Northern Exposure (E)

Numbing Blast (E)

20 (7)

Cold Snap (R)

Wintermute (R)

Ice Blink (Active)

Deep Chill (Trait)

(!) indicates a Questing Talent.

Italic text indicates a NEW Talent.

Bold text indicates a MOVED Talent.

Bug Fixes

Stasis: Fixed an issue in which cooldowns for self-cast Stasis effects, such as Ice Block, or Chromie’s Time Out, would not count down until respawn if the Hero was killed immediately after that Stasis effect concluded.

2017-06-13 Patch Notes v 2.26.0

Bug Fixes

Basic Attacks: Splash and Cleave damage will now correctly reveal targets who are hit while inside Bushes and Vents.

2016-10-18 Patch Notes v 21.0

Bug Fixes

Damage Reduction: When two damage reduction effects, such as Resistant (25%) and Hardened Shield (75%), are simultaneously applied to a Hero, the larger effect will no longer be overridden by the lesser effect.

2016-07-12 Patch Notes v 19.0

Hero Updates

Abilities

Blizzard (W)

Increased the number of waves from 2 to 3

Reduced damage from 167 to 142

Increased Mana cost from 75 to 90

Cone of Cold (E)

Increased damage from 200 to 230

Reduced Mana cost from 50 to 40

Talents

Level 4

Snowstorm (W)

Moved to level 16

Arcane Intellect (Passive)

Reduced the Mana returned from Abilities from 25 to 20

Envenom (Active)

Removed

Level 7

Ice Lance (Q)

Now also restores 10 Mana when a Chilled target is hit by Frostbolt in addition to its current functionality

Frost Armor (Passive)

Moved to level 4

Reduced Block amount from 75% to 50%

Increased Block cooldown from 8 to 10 seconds

Ice Floes (E)

Increased cooldown reduction from .5 to 1 second, up to a maximum of 5 seconds per cast

Level 13

Ice Barrier (Trait)

Shield duration increased from 3 to 4 seconds

Level 16

Snow Crash (W)

Removed

Developer Comments: A lot of these changes are designed to further
emphasize what we see as Jaina’s unique role: battlefield control. We want to
play up her ability to deny areas of the battlefield with Blizzard, and really
punish enemies who get stuck inside it. The biggest change in that regard is
that she now spawns 3 waves of Blizzard baseline. To go along with these core
kit changes, we’ve also changed or moved around a few of her Talents. One of
the biggest changes was Snowstorm, which increased the radius of Blizzard, as
we found that it lowered the difficulty of landing consecutive Blizzard waves
on enemies too much for a Talent in such an early tier.

Bug Fixes

Jaina: Casting Blizzard while hidden within a Shrub will no longer prevent players who are outside that shrub from seeing its visual effects.

2016-05-17 Patch Notes v 18.0

Talents

Conjurer's Pursuit

A reward has been added to this Questing Talent.

Quest: Gather Regeneration Globes to permanently increase Mana Regeneration by 0.10 per second, up to a maximum of 2.5 per second.

Developer Comments: We’ve added a completion point to this Talent.
Upon completing its quest, players will be provided with some additional
power. This allows us to offer spikes of power in-between Talent levels, or
even for a single player on a team. Now, simply picking the Talent and only
partially completing it is worse, but finishing the quest will return a larger
reward. Choosing the right Talents on the right Battleground or with the right
team composition has always been an important goal for us, and this change
pushes this Talent to closer align with that goal.

2016-03-29 Patch Notes v 17.0

Talents

Arcane Power

Duration increased from 5 to 10 seconds

Hero Updates

Bolt of the Storm (Talent) removed

Improved Ice Block (Talent) moved from Level 13 to Level 20

Cooldown reduced from 60 to 20 seconds

Duration reduced from 3 to 2.5 seconds

Frostbite (Trait)

Ice Barrier (Talent) moved from Level 16 to Level 13

Developer Comments: We’ve removed Bolt of the Storm from Jaina because
it overcame a core weakness of hers that we think is essential to maintain:
her lack of mobility. While there was always the potential for big plays with
Bolt, we found that it was more often used as a “get out of jail free card”
that helped make up for sloppy positioning after reaching level 20. We’re in
the process of evaluating whether or not Bolt should be available to a number
of Heroes, which is why it was also removed it from Kael’thas in this patch.

This doesn’t mean that no burst Assassins should have this type of mobility;
it’s part of Li-Ming’s core gameplay design, for example. For the types of
ranged Heroes for which Bolt is appropriate, we balance around their mobility.
For Jaina and Kael’thas, however, we think removing Bolt and compensating them
in other ways will result in healthier gameplay and Talent diversity.

Developer Comments: We’re starting to pull Basic Attack damage out of
characters who don’t rely upon it, namely Jaina and Kael’thas. For Jaina, this
will make less of her damage guaranteed and allow for more advanced plays.
Jaina’s win rate is also a little on the low end, so we want to offset the
Basic Attack nerf and add to her overall power by buffing Frostbolt and Cone
of Cold.

2016-02-02 Patch Notes v 16.0

Hero Updates

Bug Fixes

Jaina’s Ring of Frost now properly affects enemies that overlap the inner-edge of the Ability’s targeting ring.

2015-11-17 Patch Notes v 15.0

Hero Updates

Frostbite (Trait)

Deep Chill (Talent)

Bonus to the Movement Speed slow applied by Chill decreased from 35% to 30%

Developer Comments: Jaina having a 35% slow available at level 1 is
very hard to play against, and resulted in a majority of Jaina players picking
Deep Chill. This is a small decrease, but has had a positive impact on our
playtesting.

2015-08-18 Patch Notes v 13.0

Design & Gameplay

Ability Power Gains

Developer Comments: This change was aimed at removing odd gameplay
where a Nazeebo player may actually want to sacrifice his or her Gargantuan
for a more powerful one. This occurred if players kept a summon alive for a
very long time and gained Ability Power via Talents, like Gathering Power, as
this increase in Ability Power was not passed onto the Summon. Short term
summons or persistent effects will still take a snapshot of your current
Ability Power at the time they are cast, and apply the bonus for the complete
duration of the effect.

To clarify the rules for temporary Ability Power gains, the following rules have been added:

For permanent or very long duration pets or persistent effects, their damage and maximum Health will now update dynamically when Ability Power is modified. This includes:

Abathur's Monstrosity

Nazeebo's Gargantuan (with the Humongoid Talent)

For short duration pets or persistent effects, their damage and maximum Health should snapshot based upon the Ability Power of the character when they are cast. This includes:

Jaina's Water Elemental

Sgt. Hammer's Blunt Force Gun

Tychus' Drakken Laser Drill

Talents

Bolt of the Storm

Developer Comments: We love this talent and think it can create a lot
of really interesting moments, but the cooldown was just too short. At 70
seconds we think this talent is still a great level 20 pick, but now players
will have to be more strategic with how they use it. Forcing someone to use
their Bolt to avoid a gank can now be a meaningful moment with this increased
cooldown. We hope this also entices players towards choosing their Heroic
upgrades instead of Bolt when the situation calls for it.

Cooldown increased from 40 to 70 seconds

Hero Updates

Developer Comments: The Jaina changes are a result of her being too
powerful right now, and we have a secondary goal of increasing the play of
Ring of Frost. By reducing the impact of summoning a Water Elemental, Jaina
loses some of her burst potential unless she chooses Ring of Frost. Water
Elemental is now more focused on producing sustained damage.

Ring of Frost (R)

Cooldown decreased from 100 to 80 seconds

Summon Water Elemental (R)

No longer deals damage or Chills at the Water Elemental’s spawn location

Bug Fixes

After learning the Wintermute Talent, Jaina’s Water Elemental will now properly mirror her Blizzard casts.

2015-06-30 Patch Notes v 12.0

Talents

Envenom

Duration increased from 5 to 10 seconds, but damage has not been changed

Hero Updates

Sprint (Talent) removed

Summon Water Elemental (R)

Can now be re-targeted after Jaina is killed

2015-03-24 Patch Notes v 10.0

Talents

New Generic Talent: Arcane Power (Level 20)

Activate to gain 400 mana and 15% Ability Power for 5 seconds. 60 second cooldown.